1809146464 has 12 divisors (see below), whose sum is σ = 3561757164. Its totient is φ = 904573216.

The previous prime is 1809146459. The next prime is 1809146483. The reversal of 1809146464 is 4646419081.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1809146464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28267882 + ... + 28267945.

It is an arithmetic number, because the mean of its divisors is an integer number (296813097).

Almost surely, 2^1809146464 is an apocalyptic number.

It is an amenable number.

1809146464 is a deficient number, since it is larger than the sum of its proper divisors (1752610700).

1809146464 is an equidigital number, since it uses as much as digits as its factorization.

1809146464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56535837 (or 56535829 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 1809146464 is about 42534.0623970953. The cubic root of 1809146464 is about 1218.4973131922.

The spelling of 1809146464 in words is "one billion, eight hundred nine million, one hundred forty-six thousand, four hundred sixty-four".